Year current US$ 1969 59999.9986588955 1970 79999.9982118607 1971 70000.0002980232 1972 79999.9982118607 1973 180000.00715255702 1974 150000.005960464 1975 349999.99403953605 1976 270000.010728836 1977 219999.998807907 1978 189999.99761581398 1979 230000.004172325 1980 319999.99284744303 1981 330000.013113022 1982 569999.992847443 1983 370000.00476837205 1984 219999.998807907 1985 270000.010728836 1986 259999.990463257 1987 389999.98569488496 1988 340000.00357627904 1989 379999.99523162795 1990 250000 1991 500000 1992 100000.00149011599 1993 289999.99165535 1994 259999.990463257 1995 280000.001192093 1996 140000.000596046 1997 170000.00178813902 1998 200000.00298023198 1999 50000.0007450581 2000 19999.9995529652 2001 -39999.9991059303 2002 129999.995231628 2003 29999.999329447703 2004 50000.0007450581 2005 19999.9995529652 2006 19999.9995529652 2007 150000.005960464 2009 400000.00596046395 2010 610000.014305115 2011 360000.01430511504 2012 241484.820842743 2013 152602.00202465098 2014 82869.9767589569 2015 107455.410063267 2016 253206.13384246797 2017 98004.6316981316 2018 46715.4383659363 2019 68310.0000023842 2020 286869.019269943 2021 382334.32173728896 2022 336770.802736282